﻿namespace gitee测试项目
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World!");


            Console.WriteLine("我是曹志远");

            // 我是王永君 小名黑豹

        }


        public double Sum(double a ,double b)
        {
            return a + b;
        }


        public double Mul(double a, double b)
        {
            return a * b;
        }
    }
}